Acacetin and Chrysoeriol: A Short Review of the Chemistry, Plant Sources, Bioactivities and Structure-Activity Relationships of these Methylated Flavones


  • Eric W. C. Chan Faculty of Applied Sciences, UCSI University, 56000 Cheras, Kuala Lumpur, Malaysia
  • Siu K. Wong Xiamen University Malaysia, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
  • Hung T. Chan Secretariat of International Society for Mangrove Ecosystems (ISME), Faculty of Agriculture, University of the Ryukyus, Okinawa 903-0129, Japan


Acacetin, Chrysoeriol, Methylated Flavones, Cytotoxicity, Structure-Activity Relationships


Flavonoids are plant secondary metabolites that are well-known for their bioactivities. In this article, the chemistry, plant sources, bioactivities and structure-activity relationships of acacetin (ACT) and chrysoeriol (CSE) are reviewed. Of these two flavones, only ACT has been reviewed but not CSE. Sources of information cited were from Google Scholar, PubMed, PubMed Central, Science Direct, Web of Science, J-Stage, PubChem and Directory of Open Access Journals (DOAJ). The criteria used for selection of articles are based on topics rather than period of coverage, although recent references accord higher priority. Flavones, a class of flavonoids, have a C2–C3 double bond and a 4-carbonyl group but lack the C3 hydroxyl group at ring C. ACT and CSE are lesser-known methylated flavones with hydroxyl groups at C5 and C7 of ring The methoxy group of ACT is at C4' while that of CSE is at C3'. Found in many plant species, ACT and CSE have generated much research interest because of their diverse pharmacological activities, notably, their anti-cancer properties. The anti-cancer effects and molecular mechanisms of ACT towards lung, liver, gastric, prostate, breast and squamous cancer cells including leukaemia have been reported. Studies have shown that CSE inhibited breast, lung and pancreatic cancer cells including myeloma. Other bioactivities and structure-activity relationships of ACT and CSE are also briefly mentioned. Some areas for further research are suggested.


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How to Cite

W. C. Chan, E., K. Wong, S., & T. Chan, H. (2022). Acacetin and Chrysoeriol: A Short Review of the Chemistry, Plant Sources, Bioactivities and Structure-Activity Relationships of these Methylated Flavones: Tropical Journal of Natural Product Research (TJNPR), 6(1), 1–7. Retrieved from